Valve mechanism for explosive-engines.



- U. s. TRAUB. VALVE MECHANISM FOR EXPLOSIVE ENGINES.

APPLICATION-FILED MAB-.13, 1912 Patented Mar. 10, 191i 2 SHEETS-SHEET 1.

[NVE/VTOR WITNESSES HIV/aid U. 8. TRADE.

VALVE MECHANISM FOR EXPLOSIVE mamas.

APPLICATION FILED 10.11.13, 1912. 1 089 989; Patented Mar. 10, 1914.

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awuemtoz sponding ports of-exhaustand intake mani- ED STATES PATENT orator UBAL STILWELL TRAUB, 0F YONKERS, NEW YORK.

VALVE MECHANISM FOR EXPLOSIVE-ENGINES.

Specification of Letters Patent.

Patented Ma1'.' 1 0,-1914.'

. Application filed March 13, 1912. Serial No. 683,474.

To all whom it may concern Be it known that I, URAL STILWELL 'TRAUB, a citizen of the United States, residing at Yonkers, in the county of 651361165- ter and State of New-York, have invented certain new and useful Improvements in Valveelvlechanism for Explosive-Engines, of which the following is. a specification. The primary object of this invention is to simplify the construction of valve mechanism for internal combustion engines comprising a plurality of cylinders.

In carrying out the invention, it is contemplated to .utilize a valve casing associated with all of the cylinders of the engine and having suitable ports communicating therewith, there being mounted in said casing a pair of sliding valves, one inclosing the other and both having a peculiar. arrangement of exhaust and intake ports whereby in a single complete stroke of the valve mechanism, as designed for a four-. cylinder englne, each cyllnder w1ll be al lowed to exhaust and intake twice.

A further object of the invention has been to employ an exceedingly simple operating means for controlling the movements of the.

valvesin relation to one another, and their movement in relation to the exhaust and mtake ports of the cylinders and to the correfolds. Said operating means comprises a single shaft operated from the engine shaft and directly connected with the valves so as to reciprocate the latter in a proper manner in order to perform the desired result.

While the invention, as hereinafter set forth, is used in connection with a fourcylinder engine, it will becvident that the principles of construction and operation thereof may be used equally well for motors comprising two or more cylinders, all of which will be more fully comprehended upon reference to the following 'detail description and to the accompanying drawings, in which Figure 1 is a side elevatlon of anord nary four-cycle internal combustion engine, illustrating the invention'appl ed thereto, the detachable end of the valve casing being shown in section to bring out clearly. the connections of the operating shaft with the valves. Fig. 2 is a fragmentary View, partly in section and illustrating fully the manner in which the operating shaft is geared to the engine shaft. Fig. 3 is a sectional view partly broken away and illustrating the gearing and shaft connections in end elevation in their positions as seen in Fig. 2.

Fig. 4; is a plan view of the valve casing. Fig. 5 is a plan view of the outer sliding valve. Fig. 6 is a view similarto Fig. 5, showing the inner sliding valve. Fig. 7 is a longitudinal sectional view through the valve mechanism-proper, and taken about on the line 7-7 of Fig.8. Fig. 8 is a trans- Fig. 7.

l hroughoiu': the following detail de-- scription and on the several figures of the.

. verse section taken about on the line 88 of.

of four-o tinder engine has the invention applied t oreto, the respective cylinders being denoted 1, 2, 3 and 4, the crank casing 5, the fly-wheel 6, and the crank or motor shaft 7. Mounted in a suitable extension 5' of the crank casing .5 is the vertical operating'Shaft 8 having the bevel gear 9 on its,

lower end arranged to mesh with a bevel gear 10 secured to the engine shaft 7 WlllCh' rotates in a clock-wise direction. In order that the operating shaft 8 may actuate the valves properly, the shaft 7 is geared to the shaft 8, in a ratio of one to four, or in other words, the shaft 8 makes a complete revolution during four complete revolutions of the shaft 7. At its upper end portion, the

shaft 8 is mounted in suitable bearings inthe detachable end A of'the valve casing A and projecting from the shaft 8, within the part A of the casing A are cranks 11 and 12, the crank 11 being connected by a pitman rod 13 with the hollow sleeve-like valve B, whereas the crank 12 is similarly connected by the rod l b-with a second valve C which is mounted in the valve B. Each of the valves B and C is formed with an extension 15 with which its cooperating pitman rod is connected and nuts 16 may be screwed on the ends of said extensions 15 to prevent displacement of the pitman rods from said extensions. The valve casing A may be provided with flanges A at its opposite sides to facilitate bolting or fastening said casing to the cylinders 1,2, 3 and 4 at the up er ends of the latter, and said casing A is ormed at its lower end-with four intake ports 00 and four exhaust ports 3 that registerwith correspondingaports m and y" of' the {cylinders to "establis communication etwecn the valve casing and cylinders, as controlled, howcver,'by the positions of the valves B and C which also have ports to register with the ports w and y. The casing A has at its upper portions four intake ports at and four exhaust ports 3 which lead into an intake-manifold 17 and an exhaust manifold 18, respectively, the former leading to a carburetor, not shown, and the latter to asuitable point ofexhaust for the motor.

The arrangement of the intake and exha'ust ports of the valves B and C being pe culiar, will be specifically described. As

' site, or the upper and lower sides of said valve and are constituted by two openings in the valve, whereas, with respect to the valve C, the intake and exhaust'ports are each 'a single opening leading entirely through the valve so to register at proper times with the opposite openings of the valve B, a .pair

of which constitutes each p'ort'of the latter valve. For the purposes of this description, however, the two openings constituting each port of the valve B are considered a single port. i

The arrangement of the cranks 11 and 12 is such that the crank 11 is located degrees, or about one inch in advance of the crank12 if the stroke of the cranks is about four inches. The manner in which the various ports of the valves B and C are caused to register with each other and with the w proper intake and exhaust ports of the several cylinders of the engine during a complete stroke of said valves under the action of the shaft, will now be described.

Referring to F ig.'7 on the basis of a full valve stroke of four .inches from right to left, in the outstrokeof the valves, moving to the left as shown inthe drawings, when valve B has progressed about one and onehalf inches its crank 11 will havemoved 67% degrees in the direction. mentioned, and

valve C one-half inch and its crank 12 about ports Z2 and h, permitting cylinderl to lib take, andof ports a and Z, permitting cylw indcr lyto exhaust. Thefollowing registra tions of 'portsthen occur in. regular order. Ports, p1 and Z permit cylinder 3 to intake,

22% degrees. The positions assumed now are seen in Figs. 1, 2, 3 and 7, and this allows cylinder 1 to exhaust and cylinder 2 to intake, respectively, by registration of the exhaust ports aand h, and, the intake ports 0 and 'i. The nextregistration is of and ports gfa-nd 0i permit cylinderdto ex-- haust; while valve B completes its instroke and advances 6'2 degrees on its return stroke. and valve C is finishing it's instroke and advances degrees on its return 0 and 7c; cylinder 2 then intakesthrough ports a and j, and cylinder 1 exhausts through ports a and 2'; cylinder 1- then intakes through ports'a and h, and cylinder 3 .exhausts through, ports dand Z; while valve B is movingto the end of its return stroke and starting again'on' its outstroke, and valve C is still' moving in its 'instroke, cylinder 3 intakes throughports (Z and is, and cylinder 4 exhausts through ports f and on; again, as valve B moves on the out-v stroke to the point at which its movement was taken up in this description, and as valve C is likewise moving to a correspond ing position, cylinder 4:- intakes through ports f andm, and cylinder 2 exhausts through ports 3) and j. A complete stroke of each valve is completedafter all of the foregoing registrationsof the ports of the valves with each -other, and, of course, with the corresponding intakes and exhaustsof the cylindersnamed, have taken place. In the above operation all of the cylinders have exhausted, intaken, compressed," and ex ploded twice during the completestroke of the valves.

It is contemplated to provide suitable packing rings between the valves B and C we and the casing A in order to'facilitate a proper operation of these valves in controlling the passage and exhaust of the motive fluid through the valve mechanism. If de sired, the valve casing may be Water- 105 jacketed in the manner illustrated in Fig. 2 and in so far as certain details of construction including the special connections between the parts are concerned, it will be un- 'derstood that considerable modification may 11f be made in the reduction of the invention to practice.

The valve mechanism, as above described, eliminates the necessity of providing separate valves for the various cylinders ofthe engine, and aliords many practical advantages over the common type of valve mechanism for explosive motors, wherein sepa rate valves are used foreach cylinder to control the intake and exhaust;

Having thus described the-invention,- what is claimed as new is:

1. In a'multiple cylinder explosive engine, the combination of a valve casingjhaving intakeiand exhaust ports communicating with 125- .each cylinder, a tubular valve mounted in' ,saidcasing andhaving intake and exhaust portsfcorresponding with those of the casing, each oi the last mentioned ports being constituted by alinedopenings in opposite 13c Q stroke, cylinder l intakes through ports 9' i and 0, and cylinder 2 exhausts throughports therethrou'gh to register with the corresponding ports of the first valve, the ports of the second valve being surrounded throughout their-length with the material of the valve, and means for' actuating said valves both relative to each other and to the casing for effecting properly timed registration oi the respective ports.

2. In combination, a multiple cylinder explo'slve engine, a valve casmg havmg intake and exhaust ports communicating with each cylinder, a hollow valve mounted in said casing and having intake'and exhaust ports to correspond with those of the casing, each of the last mentioned intake and exhaust ports being constituted by openings at opposite sides of the valve, a second valve mounted in the first mentioned valve and havjngrintake and exhaustlports leading entirely therethrough to register with the corresponding ports of the first mentioned valve and the casing, and means for actuating said valves from the engine shaft to impart relative movement thereto, and movement to the valves relative to the ports of the. casing.

' ,3. In combination, a multiple cylinder explosive engine, a valve casing having intake and exhaust ports communicating with each cylinder, a hollow valve mounted in said casand having intake and exhaust ports to correspond with those of the casing, each of the last mentioned intake and exhaust ports being constituted by openings at opposite sides of the valve, a' second valve mounted'in the first' mentioned valve and having intake and exhaust ports leading en-' tire'ly therethrough to register with the corresponding ports of the first mentioned valve and the casing, and means for reciprocating said valves, one-within the other to cause registration of their ports at proper intervals and to cause their ports to register with the ports of the valve casing.

4. In combination, a, n'mltiple cylii'idcr explosive engine, a valve casing having intake and exhaust ports connnunicating with each cylinder, a hollow valve mounted in said casmg and having intake and exhaust ports to correspond with those of the casing, each of the last mentioned intake and exhaust ports being constituted by openings at opposite sides of the valve, a second valve mounted in the first mentioned valve and having intake and exhaust ports leading entirely therethrough to register with the corresponding ports of the first mentioned valve and the casing, an operating shaft geared to the shaft of the engine, and cranks on said sha't't connected with the respective valves aforesaid to cause such relative movement of the latter as to permit each cylinder to intake and exhaust in re ular order.

In combination, a four-cylinder explosive engine, a valve casing having intake and exhaust ports communicating with each cylinder of said engine intake and exhaust means connected with said casing, a hollow valve slidably mounted in the casing and having intake and exhaust ports therein, each port of the hollow valve being constituted by openin s at opposite sides thereof, a second valve mounted to slide in the hollow valve and having intake and exhaust ports corresponding with those of the hollow valve, an operating shaft geared to the shaft of the engine in the ratio of four to one, and connections between the shaft and the said valves, whereby, during a complete revolution of the operating shaft, the valves will be moved relative to one another and relative to the intake and exhaust ports of each cylinder to cause each cylinder to intake and exhaust twice.

In testimony whereof I alfix my signature in presence of two witnesses.

URAL 'STILVVELL TRAUB. \Vitnesses:

JOHN M. I-lonn, Josnrrr SQI-IALL. 

